Ravens coach Brian Billick quipped that he was unaware of the rookies' absence.
"What rookie holdouts?" he said. "Do I have rookie holdouts? I've got 84 guys in camp. That's who my focus is on right now. Every day you miss is a day you can't get back."
Pace reportedly received a five-year contract worth up to $11 million if escalator clauses are triggered. His signing bonus and second-tier option bonus add up to roughly $5.1 million.
It's believed that Boller is seeking similar bonus numbers, but the Ravens' latest offer is lower than that total.
"It's a business and you have to be patient and let your agent do his job," said safety Ed Reed, a first-round pick who held out for a week last year. "It's definitely hard as a player and as a competitor. I wanted to get here so bad, but it's the business that makes you hold out."
INJURY UPDATE: Defensive lineman Joe Salave'a sprained his left medial collateral ligament during the morning's team drills and is being listed as day-to-day.
Salave'a is a fifth-year pro and a former starter for the Tennessee Titans who missed all of last season with ankle problems.
The Ravens announced that offensive guard Mike Collins will miss the entire season with a knee injury suffered in NFL Europe. The Ravens will receive an NFL Europe exemption so Collins won't count against the salary cap although they still retain his rights.
MCALISTER MISSES FIRST PRACTICE: Cornerback Chris McAlister missed the morning workout as he proved to Billick that his conditioning was up to par after missing the majority of the offseason after being designated with the franchise tag.
Aaron Wilson writes for the Carroll County Times.